Organic-manganese-compound depolarizer.



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CARLETON ELLIS, 01E MONTCLAIR, NEW JERSEY, ASSIGNOR, BY MESNE nssren'rrnn'rs, T0 NATIONAL CARBON COMPANY, OF LONG ISLAND CITY, NEW YORK, A COTE-"URA- TIUN OF NEW JERSEY.

ORGANIG- u I ll,2@9,@ll8. Specification of Letters Patent.

No Drawing. Application filed 'Dctobcr in, 1915.

To all whom it may concern:

Be it known that l, GARLETON Ennis, a citizen of the United States, and a resident of Montclair, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Organic- Manganese Compound Depolarizers, of which the following is a specification.

This invention relates to depolarizing material intended particularly for use in galvanic cells of the Leclanch. type, especially dry batteries and miniature cells of a portable character in which compactness is a great desideratum.

The invention relates to organic compounds of a higher oxid of manganese and in particular manganese dioxid and relates esipecially to complexes formed by the union 0 a hydroxy compound such as glycerin with manganese dioxid in the presence of an alkali, yielding the alkali salt of manganibe employed, including various glycerin de-' rivatives and also in some cases carbohy drates such as cane sugar, glucose, starch, dextrin and so forth.

The composition may be used as a depolarizer by mixing with graphite and the like and usually compressin about a rod or pencil of carbon to form t e depolarizing electrode which is placed in a zinc container containing ammonium chlorid or other similar excitin liquid.

The met 0d of manufacture of the compound may be applied to convert mineral (natural) manganese dioxid into a hydrated form which may be done by reacting on it Patented dune id, lint.

Serial No. mice.

with glycerin and alkali and subsequently neutralizing with an acid to liberate the "hydrated product which may be separated from the glycerin and further oxidized if desired.

Sodium diglycerol manganite having the formula Na dldn(G l-T 0 may be prepared by heating manganese dioxid preferably freshly precipitated with glycerin and cans tic soda for some time, the reaction being slower with natural ore than with freshly precipitated material.

The product is a bright scarlet red when moist turning to a pale yellow when dried. 'W hen heated to 175 it decomposes. lit is soluble in a mixture of alcohol and glycerin and only slightly soluble in alcohol.

Reactions.

' To form manganese salt digest for some time with manganese sulfate.

. The copper and zinc salts are formed in same manner by digesting with the sulfates of these metals.

What ll claim is l. The process of making an artificial oxid of manganese adapted for use as a depolarizing agent which comprises reactin on natural manganese dioxid with glycerin in the presence of an alkali and in decomposing the product of reaction; whereby hydrated manganese dioxid'is obtained.

2. The process of making an artificial oxid of manganese adapted for use as a depolarizing agent which (nmprises reacting on manganese dioxid with glycerin in thepresence of an alkali and in decomposing the product of reaction; whereby hydrated manganese dioxid is obtained.

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3. The process of making an artificial oxid I drate nature in the presence of an alkali and in decomposing the product of reaction; whereby hydrated manganese dioXid is obtained,

4. The process of making an artificial oxid of manganese of a character adapted for use as a depolarizing agent in dry batteries of the Lecianch type which comprises reacting on low grade manganese dioxid with an organic agent to form a compound thereof and 10 in subsequently decomposing the product of reaction; whereby a hydrated manganese dioxid product is obtained.

CARLETON ELLIS. 

